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Cnidarians
Cnidarians are aquatic animals belonging to the phylum Cnidaria. Common cnidarians include to jellyfish, sea anemones, corals and the Portuguese Man o' War. Questions about all species of cnidarians can be directed here.
669 Questions
What is the most deadliest cnidarian?
It has been recently discovered that the Irukandji jellyfish is more deadly than is larger cousin Chironex fleckeri also known as the box jellyfish
Generically, Hydra are small, simple, fresh-water animals that can reproduce asexually by budding or sexually by producing sperm and eggs. They have tube-like bodies and a number of tentacles that contain stinging cells called cnidocytes that they use to catch their prey. They have radial symmetry. Hydras are predatory animals belonging to the phylum Cnidaria and the class Hydrazoa. They are related to such things as jellyfish and coral.
Specifically, THE Lernean Hydra was a serpent-like creature from Greek Mythology. It was an ancient water beast that possessed many heads and poisoned breath. It lived in the lake of Lerna in the Argolid, the site of the myth of Danaids. It was yet another offspring of Echidna and Typhoon, the children of Gaia, the goddess of Earth. Heracles, sometimes called Hercules, tried to slay the beast, but found that every time that he cut off one of it's heads, two more grew in it's place. Realizing this, his nephew told him to scorch the neck stumps with a burning firebrand after he cut off each head. Hercules tried this with every one of the heads, and eventually succeeded in destroying the monster.
Also, Hydra is also one of Pluto's moons (named after the mythological beast).
How are cnidarians less complex than annelids or mollusks?
Cnidarians include jellyfish and corals. Cnidarians are less complex than annelids or mollusks because the latter have gills with many layers of tissue.
No, sponges do not have eyes. In fact, they don't have any organs at all. Sponges are among the simplest forms of multicellular life. They have simple tissues made up of different cell types, and some have support structures called spicules, but none have any of the true organs or organ systems that we see in more advanced organisms.
What kingdom are cnidarians in?
All cnidarians belong to the taxonomic domain of Eukarya, which are characterised by having cells with nuclei. Eukarya covers all organisms in the Kingdom Animalia, as well as the Kingdoms Plantae, Fungi and Protista.
Most are omnivorous. In the polyp stage, they eat free floating marine organisms (plankton), any single cell or small multi-cellular plants and animals, algae, eggs, and juvenile larvae. As adults, most diet on eggs, planulae, small crustaceans, small fish, other jellies, and Ctenophora.
Can you make a sentence of hydra-headed evils?
In present time, hydra-headed evils refer to the different aspects that can occur from a problem that's difficult. In Greek Mythology a Hydra-headed evil is a seven-headed monster that Hercules kills in Lake Lerna. When he tried to cut off one of its head another immediately grew back in its place.
mythology owns!
How are cnidarians beneficial?
Cnidarians include corals. Corals provide hiding places for the majority of ocean life - reefs are the most diverse areas in the world, the ocean's rainforests, if you will. None of it would be possible without cnidarians!
Cnidarians have no gut in their body .The structure which performs function similar to gut is called gastrovascular cavity .
What does a sea anemone look like?
A anemone is a kind of flower in the sea. People thought a sea anemone looked a little bit like that flower, so theycalled it after the plant. They look like an upside-down jellyfish, with tentacles pointing up.
Why are cnidarians endangered?
They're not, that I know of. They may be losing some of their habitat in some areas, but jellyfish, anenomes, coral and other of the invertebrates are thriving in other areas.
The ones that i know are endangered are corals. They are being lost through bleaching, and dredging.
No, they are two different phyla.
The comb jellies, commonly known as Ctenophora, are a phylum of animals that live in marine waters worldwide. Their most distinctive feature is the "combs", groups of cilia that they use for swimming, and they are the largest animals that swim by means of cilia.
The Cnidaria are another phyla of jellyfish. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick.
Both Ctenophora and Cnidarians have bodies that consist of a mass of jelly with one layer of cells on the outside and another lining the internal cavity, but they are two distinct and different phyla.
How do you get the hydra on wizard101?
There are multiple ways to get a hydra one is to be a balance wizard and you will get it along the regular path of cards you obtain by leveling up. The other way is by saving up training points and getting it from alhazred in Krokotopia it is the last spell you will be able to obtain from the balance school in Krokotopia if you save up points.
Cnidarians are divided in 3 main groups: the antozoan, syphozoans and cubozoan. The anthozoans are sea anemones and coral and cubazona are jellyfish. Most do not move around, but if necessary they move to get away from predators; the ocean current carries them. But, cubazonas, such as jellyfish, propel themselves to move by opening and closing their bell slowly.
Is sea anemone living or non living?
A Sea Sponge is a living creature. They are very uncommon to find on shores or other close up watery areas. But Sea Sponges, do exist, and do live.
Hydra is a constellation made up of many stars. Each star is a different distance from us, so it's impossible to answer how far away it is.
Due to their similarities, it was originally considered that both comb jellies and cnidarians went in the Phylum Coelenterata. However, these days, comb jellies are considered as Phylum Ctenophora and cnidarians as a separate phylum Phylum Cnidaria. Cnidaria includes box jellies, jellyfish, hydra, sea anemones and corals.
